The Joebot's just fun. True, he does not understand every word. Even he can not really do not entertain a. He lit beautifully, running around, babbling to himself, falling asleep can be awakened .... If one makes an effort and takes some time, you can learn how the commands are to speak, so he understands it. The manual is not very helpful, it is not logically. The robot has three output states in which he understands only certain words. In any case: the voice pitch, speaking rate, German / English vary - practice, practice, practice. It is here so that the Mesch have to adjust to the Robbi, and not that of Robi you can understand (seems like the lords of creation some to believe, as we read in the reviews are then frustrated when he not just as a child or woman learns .... ;-) Please when assessing also always remember the price, but there is no self-learning robots that must one be clear. If you have an interest in experimentation, the chattering, lights and moving the robot: buy recommendation!